• 한국산업융합학회 논문집
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• 제20권5호
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• pp.425-430
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• 2017

This study propose CAE analysis of fire damper and design of the damper control system. Through the design of the damper system for ANSYS-CFX heat transfer. As a result of the analysis, continuance equation of the damper control. Climate system. Finaily, We have obtained a fire damper solution by using orthogonal array. The fire damper of the set of fixture and alveolus are made by using a CAE software. Also, the optimum design offshore structures. The new H-120 class fire damper was designed. In the near future, fire resistance test was carried out to obtain class H-120 thermal insulation of fire dampers according to a hydrocarbon fire conditions. The test results showed that the insulation of the damper blade was an important factor in the fireproof performance of fire dampers concerning the coaming length minimum 500mm on the unexposed side as specified test standard.

• 한국음향학회:학술대회논문집
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• 한국음향학회 2001년도 추계학술발표대회 논문집 제20권 2호
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• pp.61-64
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• 2001

본 논문에서는 class간의 변별력을 증가시키기 위한 유용한 방법인 LDA(Linear Discriminant Analysis)를 사용하여 한국어 숫자음간의 변별력을 높여 연결숫자 인식성능을 높이고자 하였다. 한국어 숫자음은 모두 단음절이며 또한 혼동가능성이 높은 숫자쌍이 존재하여 이것이 전체 인식률을 저하시킨다. LDA를 사용한 경우 숫자열 오인식률이 $8\%$ 감소하였다. 그리고, 음성특징 벡터의 차수를 감소시키고 LDA 사용전 보다 약간의 인식률 증가를 보였다. 그러나, 선형적인 방법으로 분리가 불가능한 class들의 분포가 존재할 때는 LDA를 사용하여도 변별력 향상은 기대하기 어렵다. 이와 같은 분포의 class사이의 변별력을 증가시키기 위해 between-scatter covariance matrix를 구할 때 class 사이에 혼동가능성 정도를 나타내는 weighting factor를 적용하였으며, 그 결과 숫자열 오인식률이 LDA 사용전보다 $9.7\%$ 감소하였다.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2000년도 7월 학술대회지
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• pp.117-134
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• 2000

Kim, Key-Seop(2000). English Restructuring and A Use of Music in Teaching English Pronunciation. JSEP 2000 voU This study has two-fold aims: one is to clarify the restructuring of English in utterance, and the other is to relate it to teaching English pronunciation for listening and speaking with a use of music and song by suggesting a model of 10-15 minute pronunciation class syllabus for every period in class. Generally, English utterances are restructured by stress-timed rhythm, irrespective of syntactic boundaries. So the rhythmic units are arranged in isochronous groups, of which the making is to attach clitic(s) to a host or head often leftwards and sometimes rightwards, which results in linking, contraction, reduction, sound change and rhythm adjustment in utterance, just as in music and song. With English restructuring focused on, a model of English pronunciation class syllabus is proposed to be put forward in class for every period of a lesson or unit. It tries to relate the focused factor(s) in pronunciation to the integrated, with teaching techniques and music made use of.

• 소음진동
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• 제9권6호
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• pp.1227-1233
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• 1999

Modern technology depends on the reliability of extremely high technology equipments. In the production of semiconductor wafer, optical and electron microscopes, ion-beam, laser device must maintain their alignments within a nanometer. This equipment requires a vibration free environment to provide its proper function. Especially, lithography and inspection devices, which have sub-nanometer class high accuracy and resolution, have come to necessity for producing more improved giga and tera class semiconductor wafers. This high technology equipments require very strict environmental vibration standard, vibration criteria, in proportion to the accuracy of the manufacturing, inspecting devices. This paper deals with the structural dynamic design in high class semiconductor factory in order to be satisfied more strict vibration criteria for high sensitive equipment.

• 한국멀티미디어학회논문지
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• 제7권6호
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• pp.798-805
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• 2004

There are numerous advantages of online education to the students and to the institution. There are important factors to be considered for a successful online education. The purposes of this paper are to investigate students' viewpoints, called factors, to the cyber class and analyze these factors to be a successful cyber class. For theses purposes, we developed and constructed the cyber lecture, and we surveyed student evaluations two times for the cyber lecture in the middle and at the end. We found that students view the cyber class with four factors. Assessments on factors were changed during the cyber class and were different according to students' background.

• 대한수학회지
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• 제32권1호
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• pp.7-15
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• 1995

Multigrid method has been used widely to solve elliptic problems because of its applicability to many class of problems and fast convergence ([1], [3], [9], [10], [11], [12]). The estimate of convergence rate of multigrid is one of the main objectives of the multigrid analysis ([1], [2], [5], [6], [7], [8]). In many problems, the convergence rate depends on the regularity of the solutions([5], [6], [8]). In this paper, we present an improved estimate of reduction factor of multigrid iteration based on the proof in [6].

• 한국초등과학교육학회지:초등과학교육
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• 제35권4호
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• pp.406-415
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• 2016

The purpose of this study was to compare self-regulation and sociality between elementary scientific gifted students and general students. The subjective students are composed of fifth and sixth grade elementary school students. A survey on self-regulation and sociality had been conducted to 106 general students, 38 gifted class students and 43 students in science educational institute for the gifted. The results of this study were as follows: First, the results of ANOVA test showed that the scientific gifted students were significantly better than general students on all subscales of self-regulation and sociality. Second, the results of correlation analysis indicated that self-regulation and sociality and their subscales were all highly positive relationship on students in science educational institute for the gifted, gifted class students and general students. Third, the results of multiple regression analysis showed that the motivational factor of self-regulation gave the greatest effect to the sociality of students in science educational institute for the gifted, whereas, the cognitive factor of self-regulation gave the greatest effect to the sociality of the general students and gifted class students.

• Journal of Electrical Engineering and Technology
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• 제9권2호
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• pp.569-575
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• 2014

A highly efficient class E power amplifier is demonstrated for application to wireless power transfer system. The amplifier is designed with an L-type matching at the output for harmonic rejection and output matching. The power loss and the effect of each component in the amplifier with the matching circuit are analyzed with the current ratio transmitted to the output load. Inductors with a quality factor of more than 120 are used in a dc feed and the matching circuit to improve transmission efficiency. The single-ended amplifier with 20 V supply voltage shows 7.7 W output power and 90.8% power added efficiency at 6.78 MHz. The wireless power transfer (WPT) system with the amplifier shows 5.4 W transmitted power and 82.3% overall efficiency. The analysis and measurements show that high-Q inductors are required for the amplifier design to realize highly efficient WPT system.

• 수산해양교육연구
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• 제25권2호
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• pp.526-537
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• 2013

The purpose of this study was to provide basic data needed for analyzing the factors needed for students' positive participation in physical education class and developing the leadership skills needed for effective class guidance by analyzing what relationship there exists between a physical education teacher-exercised transformational leadership and students' trust in physical education teachers and class satisfaction; thus, this study drew the conclusions as follows: First, in the relations between a physical education teacher-exercised transformational leadership and students' trust, it was found that a physical education teacher's charisma and intellectual stimulus had a positive influence on high school students. Second, it was found that a physical education teacher's charisma and individual consideration had a positive influence on a physical education teacher-exercised transformational leadership and the subordinate factor in class satisfaction-a sense of accomplishment while individual consideration and intellectual stimulus were found to have a positive influence on evaluation. Third, as for the trust in a physical education teacher and class satisfaction, the trust was found to have a positive influence on both a sense of accomplishment and evaluation.

• 한국전자거래학회지
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• 제9권3호
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• pp.145-154
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• 2004

객체지향 및 컴포넌트지향 소프트웨어 개발 방법론의 클래스의 도출은 개발하려는 소프트웨어의 전체 품질을 결정하는데 중요한 요소이다. 각 방법론에서는 이 부분에 대해 클래스의 정의와 도출하는 방법을 설명하고 있지만 초보 분석자들이 활용하기는 어려운 점이 많다. 그 중, 개념적 갭(conceptual gap)으로 인한 문제는 클래스 도출에 가장 큰 영향을 미친다. 연구에서는 이런 부분을 보완하기 위한 장치로써 세가지 다이어그램을 제안한다. 요구분석과정의 결과를 도식적으로 정리하여 클래스 도출을 보완하기 위한 도구로 정보다이어그램(Information Diagram), 행위다이어그램(Behavior Diagram) 그리고 관리다이어그램(Management Diagram)이다. 세 다이어그램은 시스템의 관련자(stakeholder)가 시스템에 어떤 서비스를 요구하는가에 대한 관점으로 필요한 정보를 찾고, 그에 포함될 수 있는 세부 행위를 분석하고, 누가 이 서비스에 대한 책임이 있는가의 명세이다. 본 연구에서 제안하는 다이어그램들은 기존의 소프트웨어 개발 방법에서 클래스를 도출하는 과정에 활용할 수 있다.